NOTE: One of size or snapshot_id is required when specifying an ECS disk. If all of them be specified, size must more than the size of snapshot which snapshot_id represents. Currently, alicloud_disk doesn't resize disk.

name - (Optional) Name of the ECS disk. This name can have a string of 2 to 128 characters, must contain only alphanumeric characters or hyphens, such as "-",".","_", and must not begin or end with a hyphen, and must not begin with http:// or https://. Default value is null.

description - (Optional) Description of the disk. This description can have a string of 2 to 256 characters, It cannot begin with http:// or https://. Default value is null.